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Prevent nnn from waiting on open file process (#40)

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* Prevent nnn from waiting on open file process

* Add env var flag to not wait for child process when opening file

* Set nowait flag once to skip bit-or every time we open a file

* Add documentation for NNN_NOWAIT
This commit is contained in:
Paul 2017-09-19 02:30:54 -04:00 committed by Arun Prakash Jana
parent 968beb434a
commit df4b557ca1
3 changed files with 17 additions and 1 deletions
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6
README.md
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@ -353,6 +353,12 @@ Any other value disables colored directories.
The terminal screensaver is disabled by default. To set the wait time in seconds, use environment variable `NNN_IDLE_TIMEOUT`.
#### open file in new process and make the nnn not block
The desktop file opener should take care of opening files in new processes without causing `nnn` to block.
If `nnn` does block/freeze when a file is open, then set the environment variable `NNN_NOWAIT` to any
non-zero value.
### Why fork?
I chose to fork because:

6
nnn.1
View file

@ -207,6 +207,12 @@ screensaver.
echo -n $1 | xsel --clipboard --input
-------------------------------------
.Ed
.Pp
\fBNNN_NOWAIT:\fR make nnn not block while a file is open. Only necessary if
nnn is blocking while a file is open.
.Bd -literal
export NNN_NOWAIT=1
.Ed
.Sh KNOWN ISSUES
If you are using urxvt you might have to set backspacekey to DEC.
.Sh AUTHORS

6
nnn.c
View file

@ -222,6 +222,7 @@ static char *player;
static char *copier;
static char *editor;
static char *desktop_manager;
static char nowait;
static blkcnt_t ent_blocks;
static blkcnt_t dir_blocks;
static ulong num_files;
@ -2211,7 +2212,7 @@ nochange:
}
/* Invoke desktop opener as last resort */
spawn(utils[2], newpath, NULL, NULL, F_NOTRACE);
spawn(utils[2], newpath, NULL, NULL, nowait);
continue;
}
default:
@ -2863,6 +2864,9 @@ main(int argc, char *argv[])
/* Get the default copier, if set */
copier = getenv("NNN_COPIER");
/* Get nowait flag */
nowait = F_NOTRACE | (getenv("NNN_NOWAIT") ? F_NOWAIT : 0);
signal(SIGINT, SIG_IGN);
/* Test initial path */